ruby-on-rails - 事件模型序列化器中的 Assets 管道

Question

我试图通过包含ActiveView::Helpers来在模型序列化器输出中包含图像 Assets 管道url:

class PostSerializer < ActiveModel::Serializer
  include ActiveView::Helpers

  attributes :post_image

  def post_image
    image_path "posts/#{object.id}"
  end
end

结果是 /images/posts/{id}，而不是 Assets 管道路径的有效路径，即。 /assets/images/posts/{id}。如何在序列化器输出中包括有效的 Assets 管道路径？

Answer 1

也许这可以工作:

def post_image
  _helpers = ActionController::Base.helpers
  _helpers.image_url "posts/#{object.id}"
end